Pods Safe Is Diacetyl In Vape Juice? Chef's Resource Diacetyl Vuse Flavors Australia It's a Fact. Vaping Can Cause Popcorn Lung Poster ToucanEd What Vapes Have Diacetyl After Flavor Bans in the US? DYK? Vaping coats lungs with potentially harmful chemicals. This can include chemicals such as: Diacetyl: This food additive, used to deepen e cigarette flavors, is known to damage small passageways in the lungs. Resource Center Breathe PA